Tire mender



April-8, 1930. J. M* BOSCARDIN TIRE MENDER Filed Aug. 2,l 1928 PatentedApr. 8, 1930 UNITED STATES JOHN M. BoscAaDIN, or carreau; oouuncrrcufrffl TIRE MENDER y .v iv

`Application filed August 2, 1928. Serial-No. 297,051.

This invention relates to a tire mender or improved blow out patch.

The principal object is to provide a mechanical device whereby the sidewalls of a 5 tire may be held in relatively closed position whenpressure is exerted against the side walls upon the inflation of theinner tube.

Another object is to provide a tire mender with an outside cover platethat will serve l0 to keep the dust and dirt out of the device. At thesame time, the cover plate serves to force the teeth on a lower plateinto the tire and prevent the spreading of the teeth when pressure isexerted from within. The cover l5 plate also servesto limit the depth towhich the teeth may be forced in the tire.

Other objects will be shown in the, specilication and drawings.

At the present time where a blow out patch 29 is used, there is noattempt made to prevent the walls of the tire adjacent the blow out orcut from expanding under pressure.

The blow out patch may serve as a means for preventing the inner tubefrom extending through the cut or blow out, and at the same time, serveto protect the surface of the inner tube. By the use of the devicedescribed herein, the side walls adjacent the rupture or cut areprevented from stretching, thus saving the general tire structure, andat the same time, more direct and positive action is obtained.

In the drawings:

Figure l is a section'of a tire showing the 35 the tire mender inposition;

Figure 2 is a perspective of the various parts constituting the tiremender showing the various parts separated;

Figure 3 is a section taken through a tire ailid tire mender showing thetire mender in a ace; Y l Figure 4 is a top plan with a'portion of thecover plate broken away;

Figure 5 is a section taken along line 5 5 of Figure 3; and

Figure 6 is a section similar to Figure 5 showing the tire mender beforeit has been forced into the tire as shown in Figure 5.

Referring to the drawings in which similar numerals designate likeparts:

screw members 3, whoseheads l are counterf sunk inthe base plate l andare further protected by a layerrof soft material 2. Ad-

jacent ythe base plate l is a section of the usual tire 5 showing arupture. i The'screlw members 3 passi. through the tire 5 and fsecure aplate 7 in alinement with ybase plate l and on the outside of the tire5. Alongthe edge of plate7 are teeth 8, at an angle-to the plate 7. Ontop of `the plate 7 is a cover plate 9 having flangesl() which extendaround the plate 7 on all sides'. Nuts 11 orother suitable securingmeans, bear against'gthe cover plate 91andraiford means forjdrawingthebase plate lsecurely against the tire s 15'which in turn is fo-cedvagainst they plate 7 and teeth 8. Y i A yIt willbe noted that the baseplate l is 4smaller than the ,plate'7 and may be forced up within theteethy 8 so'as to bear,v against vthe tire and indirectly against thefplate v7. This 'is highly desirable as it permits a much closer contact,and atthe same time forces theteeth y8 securelyinto the tire 5F g' Asactually 'used upona tire having a blow out or a rupture in the sidewalls", a. base plate -l' will be placed `on' the insideo'f the-tire op-Y posite the rupture. The screws will thenbe forced in thetireprefera'bly at points where there isa rupture or abrasion. rlheplate 7 is then placed upon'V the screws with a cover plate 9'on`top ofthe plate 7. ltjwillbe noted,.as shown -inlFigure 6 that the 'teeth 8proj ectat anacute angle from the plate 7 and that the cover plate 9does not fit over the plate 7, but merely rests against the same. Uponpressure being exerted due to the tightening of the nut 11, the coverplate 9 will be forced over the plate 7, and due to the flanges l0extending around the plate 9, the teeth 8 will be forced inwardly at thesame time drawing the side walls adjacent the rupture closer ly over theplatev 7,.the teeth 8 will be firmly together until when the cover plate9 fits snugf imbedded in the tire and at approximately a f right angleto the plate 7.

The cover plate 9 serves to limit the movement of the teeth 8 inwardlyand as soon as the flange l0 cornes in contact with the casing, it willserve as a stop. The cover plate 9 further serves to prevent thespreading of the teeth 8 when the tire is filled with air. Again, flangel() affords a very convenient method of 'removing the plate 7 as the twowill be locked together and ascrew driver or similar tool may beinserted under the flange l0 and thus very easily remove the plate 7from the tire. It willbe noted that upon the teeth 8 being forcedinwardly by the flange 10, a shoulder will be formed securely holdingthe flange 10 in place, and locking the plates 9 and'7 together.

As soon as the plate 7 has been forced rinto position by the plate 9,the base plate l will be forced upwardly, and since it is smaller thaneither of the other plates, it will'have a tendency to seat within theplate 7. This action will result in a flush surface on the inside of thetire and overcomes one of the very common troubles, where a boot orpatch is used, namely, of such article forming an obstruction within thetire which may pinch or wear against the tube causing a deflation of thetire. To further guard against any lsuch contingency, the metal plate 1is protected with a coating of rubber orother soft material.

Having thus described my invention, what I claim is:

1. A tire mender comprising a base plate, a second plate secured to saidbase plate, said second plate having teeth angularly disposed to saidplate, a cover plate adjacentsaid second plate, said cover plate havinga flangeeX- tending around its edges and overlapping said second plate,securing means passing through all the mentionedplates, for drawing theteeth on said second plate within the flange on said cover plate.

2. A tire mender comprising a base plate, a second plate, said secondplate having teeth angularly disposed to said second plate, a coverplate adjacent said second plate, said -cover plate having allangelextending around its edges and overlapping said second plate, meansforsecuring said plates together and for drawing the teeth on saidsecond plate within the flange on said cover plate.

,In testimony whereofI afiiX my signature.

JOI-IN VBDSVCARDIN.

